From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from eggs.gnu.org ([209.51.188.92]:35030) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1goe36-0007sr-1I for qemu-devel@nongnu.org; Tue, 29 Jan 2019 19:48:17 -0500 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1goe35-0000dr-42 for qemu-devel@nongnu.org; Tue, 29 Jan 2019 19:48:15 -0500 Received: from out1-smtp.messagingengine.com ([66.111.4.25]:52641) by eggs.gnu.org with esmtps (TLS1.0:DHE_RSA_AES_256_CBC_SHA1:32) (Exim 4.71) (envelope-from ) id 1goe34-0000da-VY for qemu-devel@nongnu.org; Tue, 29 Jan 2019 19:48:15 -0500 From: "Emilio G. Cota" Date: Tue, 29 Jan 2019 19:47:04 -0500 Message-Id: <20190130004811.27372-7-cota@braap.org> In-Reply-To: <20190130004811.27372-1-cota@braap.org> References: <20190130004811.27372-1-cota@braap.org> MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Subject: [Qemu-devel] [PATCH v6 06/73] cpu: introduce process_queued_cpu_work_locked List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , To: qemu-devel@nongnu.org Cc: Richard Henderson , Paolo Bonzini This completes the conversion to cpu_mutex_lock/unlock in the file. Reviewed-by: Richard Henderson Reviewed-by: Alex Bennée Signed-off-by: Emilio G. Cota --- cpus-common.c | 17 +++++++++++------ 1 file changed, 11 insertions(+), 6 deletions(-) diff --git a/cpus-common.c b/cpus-common.c index 85a61eb970..99662bfa87 100644 --- a/cpus-common.c +++ b/cpus-common.c @@ -337,20 +337,19 @@ void async_safe_run_on_cpu(CPUState *cpu, run_on_cpu_func func, queue_work_on_cpu(cpu, wi); } -void process_queued_cpu_work(CPUState *cpu) +/* Called with the CPU's lock held */ +static void process_queued_cpu_work_locked(CPUState *cpu) { struct qemu_work_item *wi; bool has_bql = qemu_mutex_iothread_locked(); - qemu_mutex_lock(&cpu->lock); if (QSIMPLEQ_EMPTY(&cpu->work_list)) { - qemu_mutex_unlock(&cpu->lock); return; } while (!QSIMPLEQ_EMPTY(&cpu->work_list)) { wi = QSIMPLEQ_FIRST(&cpu->work_list); QSIMPLEQ_REMOVE_HEAD(&cpu->work_list, node); - qemu_mutex_unlock(&cpu->lock); + cpu_mutex_unlock(cpu); if (wi->exclusive) { /* Running work items outside the BQL avoids the following deadlock: * 1) start_exclusive() is called with the BQL taken while another @@ -376,13 +375,19 @@ void process_queued_cpu_work(CPUState *cpu) qemu_mutex_unlock_iothread(); } } - qemu_mutex_lock(&cpu->lock); + cpu_mutex_lock(cpu); if (wi->free) { g_free(wi); } else { atomic_mb_set(&wi->done, true); } } - qemu_mutex_unlock(&cpu->lock); qemu_cond_broadcast(&cpu->cond); } + +void process_queued_cpu_work(CPUState *cpu) +{ + cpu_mutex_lock(cpu); + process_queued_cpu_work_locked(cpu); + cpu_mutex_unlock(cpu); +} -- 2.17.1